Operation; Switching Functionality - GarrettCom Magnum 10KG Installation And User Manual

Magnum 10KG Managed Switch Installation and User Guide
Note: To use the Console port to configure the managed switch, a serial (Null-modem)
male to male cable is required to communicate properly. The Null-Modem (RJ45) cable
is optional and can be ordered from the factory, along with the unit as-
CONSOLE-CBLQD for serial port
CONSOLE-CBLQU for USB port
NOTE for Power Substations: In support of the IEEE 1613 Class 2 standard, GCI
advises that, for substation applications, the serial (RJ45) console ports are
intended for temporary connectivity to other equipment such as PCs. Since the
console port connection is temporary, it is excluded from IEEE 1613 packet-
loss testing per the 1613 standard-defined test procedure.
4.0

OPERATION

This chapter describes the functions and operation of the Magnum 10KG Switch.
4.1

Switching Functionality

A Magnum 10KG provides switched connectivity at Ethernet wire-speed
among all of its ports. The Magnum 10KG supports10/100/1000Mbs for copper media
and 100/1000Mbs separate traffic domains for fiber ports to maximize bandwidth
utilization and network performance. All ports can communicate to all other ports in a
Magnum 10KG, but local traffic on a port will not consume any of the bandwidth on any
other port.
The Magnum 10KG units are plug-and-play devices. There is no software
configuring necessary to be done for basic operation at installation or for maintenance.
There is an optional Half / Full duplex mode and 10Mbps or 100Mbps selection for the
switched ports which must be configured through MNS-6K management software per
unit as per the requirement. The internal functions of both are described below.
Filtering and Forwarding
Each time a packet arrives on one of the switched ports, the decision is taken to
either filter or to forward the packet. Packets whose source and destination addresses are
on the same port segment will be filtered, constraining them to that one port and relieving
the rest of the network from having to process them. A packet whose destination address
is on another port segment will be forwarded to the appropriate port, and will not be sent
to the other ports where it is not needed. Traffic needed for maintaining the
un-interrupted operation of the network (such as occasional multi-cast packets) is
forwarded to all ports.
The Magnum 10KG Switch operates in the store-and-forward switching mode,
which eliminates bad packets and enables peak performance to be achieved when there is
heavy traffic on the network.
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07/12